Monthly subscription receipt needed

I had the same problem here is the answer and its very easy to do.

Please follow the steps below - on how to locate the Invoice.
If you're not signed in, sign in to www.adobe.com.
      The Sign in link is located on the top menu of most pages.
      After you've signed in, click your name on the navigation bar, and then click Manage Account.
      Note: You may be prompted to enter your password to verify your identity.
      Under the Plan & Products section, click Manage Plan.
      Plan details, Payment Details, and Billing History are listed on this page.

      To print the invoice, click the Print button next to the invoice.
      Click the Print icon of the PDF viewer or choose File

      Print in the browser to print the invoice.

     Pattie